<template>
  <div class="search-index">
  <div class="search">
  <input v-model="keyword" class="input-search" type="text" placeholder="请输入城市"/>
  </div>
  <div class="search-content"
       v-show="keyword"
       ref="wrapper"
       >
    <ul>
      <li class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)">{{item.name}}</li>
      <li class="search-item border-bottom" v-show="!list.length" >没有找到匹配数据</li>
    </ul>
  </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changeCity', city)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||
            value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  }
}
</script>

<style lang="stylus" scoped>
@import "~styles/varibles.styl"
  .search
    background $bgColor
    height .72rem
    padding 0 .1rem
  .input-search
   height .62rem
   line-height .62rem
   width 100%
   text-align center
   border-radius .06rem
   color #666
.search-content
  position absolute
  top 1.58rem
  bottom 0rem
  left 0rem
  right 0rem
  z-index -1
  background #eee
  .search-item
    color #666
    background #ffffff
    padding .2rem
</style>
